Fe-catalyzed single-walled carbon nanotube synthesis within a flame environment

Flame synthesis of single walled carbon nanotubes (SWNT) is demonstrated using F(e) nanoparticles within a pyrolysis flame configuration. The roles of the nebulized solution solvent, metal nitrate concentration, pyrolysis flame gas composition, and the surrounding flame gas composition are interpret...

Full description

Saved in:
Bibliographic Details
Published in:Combustion and flame 2002-07, Vol.130 (1-2), p.37-47
Main Author: VANDER WAL, Randall L
Format: Article
Language:English
Subjects:
Applied sciences
Combustion. Flame
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Miscellaneous
Theoretical studies. Data and constants. Metering
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Flame synthesis of single walled carbon nanotubes (SWNT) is demonstrated using F(e) nanoparticles within a pyrolysis flame configuration. The roles of the nebulized solution solvent, metal nitrate concentration, pyrolysis flame gas composition, and the surrounding flame gas composition are interpreted as reflecting suitable concentrations of reactants without excessive pyrolysis products or deactivating species. The preferential reactivity of the catalyst particle toward CO and not toward C2H2 is understood as reflecting nanoparticle restructuring, interactions between co-adsorbates and reactant pyrolysis products. Fe is found to exhibit preferential reactivity toward CO for SWNT catalysis with this reactivity being strongly dependent upon catalyst particle size within our flame conditions. H2 appears to moderate the dissociative adsorption through electronic interactions with co-adsorbates, mediated by the catalyst nanoparticle and by maintaining a catalytically clean particle surface. (Author)
ISSN:0010-2180
1556-2921
DOI:10.1016/S0010-2180(02)00360-7